Why does water have higher entropy than helium?

  1. Hi,

    Under standard conditions, why does water have higher entropy than helium? Isn't helium a gas? I understand that water has more atoms, but it seems more ordered and is a liquid. I'm not sure how a qualitative analysis could lead to the conclusive result that water is higher in entropy compared to helium..

    Could anyone please help in guiding me how to properly think about this?
     
  2. jcsd
  3. mfb

    Staff: Mentor

    Entropy per volume?
    Water has much more molecules per volume, and those molecules have more freedom - in addition to the position, they can also vary in their orientations. Water is not ordered.
     
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